As mentioned http://www.sandiegoreader.com/news/2014/aug/19/...
Amadeus does it because the music is the story, the music is the star. Salieri thwarts Mozart's music and also tries to claim the Requiem as his own. Think about that scene when Mozart is dictating to Salieri. It's riveting but the dialogue is almost gibberish to the musically uninitiated...talking about e flat major and whatnot. But we get the music, we get it.
I haven't seen Impromptu.— August 27, 2014 1:15 p.m.